Hermann kropff



(No Model.) A

H. KROPPP.

COOLING APPARATUS. 4

No. 268,106. Patented Nov. 28, 1882,

A F I? 5 MI E A Z- 5; l m F '7 ii VII/II) VIII/II V/IIIA VIII/I4 VIII/A d c 1! Al Al WITNESSES: A v I r I ATTORNEY for the ice-water or other refrigerating-liquid.

' UNITED STATES PATENT OFFICE;

HERMANN KROPFF, on NEW YORK, Nu

COOLING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 268,106, dated November 28, 1882.

Application filed August 31, 1882. (No model.)

phragms, forni'ing extensions of the transverse partitions. The bottom of the supply-chamber is provided with downwardly-extending pipes which inclose the diaphragms, and are of somewhat greater length than the same. The transverse partitions are provided with air-openings, so that the air can pass directly through the supply-chamber to the eduction-pipe. An exterior perforated plate moves along the pipes and serves for cleaning the exterior surface of the same. I

In the accompanyingdrawings,Figurelrepresents a vertical longitudinal section of myimproved cooling apparatus, and Fig. 2 is a ver tical transverse section of the same.

Similar letters of reference indicate corresponding parts.

The cooling apparatus consists of a supplychamber, A, which is made of semicircular, oblong, or other cross-section, and which is composed of a top plate, A,and a bottom plate, AZ-which are tightly connected together by rivets or otherwise. The supply-chain her A is provided with an induction-pipe, a, and with an eduction-pipe, b, arranged at opposite ends,

The top plate, A, of the supply-chamberisprovided with transverse partitions d, and the bottom plate, A with as many downwardly-extending cooling-pipes B as there are transverse partitions cl, the latter being arranged so as to extend centrally across the upper ends, of the pipes B. To the transverse partitions d are applied sheet-metal diaphragms d, which extend centrally through the pipes B, to a-point near the bottom thereof, as shown clearlyin Fig. 1.

The refrigerating-liquid is supplied through the pipe at, and passes successively, by means of the partitions d, diaphragms d, and the intermediate spaces in the supply-chamber A. through the cooling-pipes B until it passes off through the eduction-pipe b. If any air is carried with the refrigerating-liquid into the cooling apparatus, it passes through small holes d in the transverse partitions d directly to the eduction'pipe -b, without being compelled to pass with theliquid through the cooling-pipes of the apparatus and impede the motion ofthe same.

Au exterior plate, 0, with as many openings as there are cooling-pipes, is arranged around the same, and serves for cleaning the exterior surface of the pipes.

If the apparatus be used'for cooling wort, it is suspended in the fermenting-tub. It may also be used for cooling paraffine, oils, and other substances. If it be used for the manufacture of cl ar ice, the refrigerating-liquid consists of a chilled solution of chloride of calcium. In this case the apparatus is hung into the water to be frozen, which latter is agitated duringfreezing. The lower ends of the pipes B are in this case closed by screw-plugs. Aclear block ofice formsaround the pipes,which block may he m'adeof any size, iftwo or more cooling apparatus are used sidewise of each other. block is frozen the plugs at the lower ends of the cooling-pipes are screwed off, so that the brine can run out. Steam is then admitted in to the apparatus, which heats the pipes, so that the block of ice can be removed therefrom. The cylindrical openings in the block are then filled with water, which freezes by the low temperature of the ice, forming thus a perfectly clear andsolid block.

The apparatus can be readily cleaned at the inside by disconnecting the bottom plate, with the pipes, from the top plate audits diaphragms. As the pipes have a large coolin g-surface which is distributed in the wort to be cooled, they are more efficient for cooling purposes than the floats now in use for cooling purposes.

The cooling apparatus is strong, durable, and compact, and conveniently handled in being placed in or removed from the fermentin g-vats.

Iam aware thata cooling apparatus hasbeen patented consisting of pumps for compressing gas, and tubes for confining, regulating, and di recting the degree of expansion in difi'erent parts of the containing vessels or tubes, so that When the such a range of temperatures of external sur faces is secured as to avoid the formation of snow from the moisture condensed or precipitated from the atmosphere thereon.

1 am also aware that an apparatus has been patented consisting of plates which form a set of zigzag passages, through which hot beer is made to conrse,and another set ofplates which form channels contiguous to thehot-beer channels, through which a stream of cold water is made to pass, but both the apparatus and their operations differ essentially from the devices and operation of my invention as herein described, and particularly pointed o'utin the claims.

Having thus described my invention, Iclaim as new and desire to secure by Letters Patent- 1. The combination of a supply-chan1ber,A,

having transverse partitions d, provided with air-openingsd ,diaphragmsd,extendingdownwardly in line therewith, and cooling-pipes B,

attached to the bottom of the supply-chamber 

